With respect to Oswald I read an excellent alternate theory that not only explains the possibility of a second shooter but also the ballistic deception that would allow it to take place without leaving evidence behind.
Not a conspiracy nut but I do have an open mind and the theory makes sense.
To me its far more simple. Watch the digitalized Zapruder (sp?) video and apply physics 101, action and reaction. His head explodes up and back. That doesnt happen from a shot from behind. Then there's the SS agent being waved away from the rear bumper where he should have been. There are several other things that dont add up.
I'm an old guy too, MBro. I've been around in this world as well, and I refuse to eat lies, no matter who is serving. On the other hand, I agree it is your right to believe lies if you wish.